Renewing their vows: France and Germany sign 'Treaty of Aachen'

Strasbourg is a particularly apt place for discussing this week's topic, as it lies on the Franco-German border, in a region that’s changed hands between France and Germany multiple times in its history – most recently annexation by Nazi Germany, then liberation after WWII. Earlier this week, President Macron and Chancellor Merkel signed off on a new version of the so-called Élysée Treaty, which has been the basis for 56 years of post-war co-operation. We ask what this new document is all about.